<template>
  <span>{{ date }}</span>
</template>

<script setup lang="ts" name="Time">
import { ref, watch } from 'vue'
import { useI18n } from '@/hooks/web/useI18n'
import { useIntervalFn } from '@vueuse/core'
import { formatToDateTime, formatToDate, dateUtil } from '@/utils/dateUtil'
import { isNumber, isObject, isString } from '@/utils/is'
import { propTypes } from '@/utils/propTypes'

const ONE_SECONDS = 1000
const ONE_MINUTES = ONE_SECONDS * 60
const ONE_HOUR = ONE_MINUTES * 60
const ONE_DAY = ONE_HOUR * 24

const props = defineProps({
  value: propTypes.oneOfType([propTypes.number, propTypes.instanceOf(Date), propTypes.string])
    .isRequired,
  step: propTypes.number.def(60),
  mode: propTypes.oneOf(['date', 'datetime', 'relative']).def('relative')
})

const date = ref('')

const { t } = useI18n()

useIntervalFn(setTime, props.step * ONE_SECONDS)

watch(
  () => props.value,
  () => {
    setTime()
  },
  { immediate: true }
)

function getTime() {
  const { value } = props
  let time = 0
  if (isNumber(value)) {
    const timestamp = value.toString().length > 10 ? value : value * 1000
    time = new Date(timestamp).getTime()
  } else if (isString(value)) {
    time = new Date(value).getTime()
  } else if (isObject(value)) {
    time = value.getTime()
  }
  return time
}

function setTime() {
  const { mode, value } = props
  const time = getTime()
  if (mode === 'relative') {
    date.value = getRelativeTime(time)
  } else {
    if (mode === 'datetime') {
      date.value = formatToDateTime(value)
    } else if (mode === 'date') {
      date.value = formatToDate(value)
    }
  }
}

function getRelativeTime(timeStamp: number) {
  const currentTime = new Date().getTime()

  // Determine whether the incoming timestamp is earlier than the current timestamp
  const isBefore = dateUtil(timeStamp).isBefore(currentTime)

  let diff = currentTime - timeStamp
  if (!isBefore) {
    diff = -diff
  }

  let resStr = ''
  let dirStr = isBefore ? t('component.time.before') : t('component.time.after')

  if (diff < ONE_SECONDS) {
    resStr = t('component.time.just')
    // Less than or equal to 59 seconds
  } else if (diff < ONE_MINUTES) {
    resStr = parseInt(diff / ONE_SECONDS) + t('component.time.seconds') + dirStr
    // More than 59 seconds, less than or equal to 59 minutes and 59 seconds
  } else if (diff >= ONE_MINUTES && diff < ONE_HOUR) {
    resStr = Math.floor(diff / ONE_MINUTES) + t('component.time.minutes') + dirStr
    // More than 59 minutes and 59 seconds, less than or equal to 23 hours, 59 minutes and 59 seconds
  } else if (diff >= ONE_HOUR && diff < ONE_DAY) {
    resStr = Math.floor(diff / ONE_HOUR) + t('component.time.hours') + dirStr
    // More than 23 hours, 59 minutes and 59 seconds, less than or equal to 29 days, 59 minutes and 59 seconds
  } else if (diff >= ONE_DAY && diff < 2623860000) {
    resStr = Math.floor(diff / ONE_DAY) + t('component.time.days') + dirStr
    // More than 29 days, 59 minutes, 59 seconds, less than 364 days, 23 hours, 59 minutes, 59 seconds, and the incoming timestamp is earlier than the current
  } else if (diff >= 2623860000 && diff <= 31567860000 && isBefore) {
    resStr = dateUtil(timeStamp).format('MM-DD-HH-mm')
  } else {
    resStr = dateUtil(timeStamp).format('YYYY')
  }
  return resStr
}
</script>
